Neil Brown wrote:
On Friday June 16, nigel@xxxxxxxxxxxxxx wrote:
Thanks for all the advice. One final question, what kernel and mdadm
versions do I need?
For resizing raid5:
mdadm-2.4 or later
linux-2.6.17-rc2 or later
NeilBrown
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Ok, I tried and screwed up!
I upgraded my kernel and mdadm.
I set the grow going and all looked well, so as it said it was going to
take 430 minutes, I went to Starbucks. When I came home there had been a
power cut, but my UPS had shut the system down. When power returned I
rebooted. Now I think I had failed to set the new partition on /dev/hdc1
to Raid Autodetect, so it didn't find it at reboot. I tried to hot add
it, but now I seem to have a deadlock situation. Although --detail shows
that it is degraded and recovering, /proc/mdstat shows it is reshaping.
In truth there is no disk activity and the count in /proc/mdstat is not
changing. I gues sthe only good news is that I can still mount the
device and my data is fine. Please see below...
Any ideas what I should do next? Thanks
Nigel
[root@homepc ~]# uname -a
Linux homepc.nigelterry.net 2.6.17-rc6 #1 SMP Sat Jun 17 11:05:52 EDT
2006 x86_64 x86_64 x86_64 GNU/Linux
[root@homepc ~]# mdadm --version
mdadm - v2.5.1 - 16 June 2006
[root@homepc ~]# mdadm --detail /dev/md0
/dev/md0:
Version : 00.91.03
Creation Time : Tue Apr 18 17:44:34 2006
Raid Level : raid5
Array Size : 490223104 (467.51 GiB 501.99 GB)
Device Size : 245111552 (233.76 GiB 250.99 GB)
Raid Devices : 4
Total Devices : 4
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Sat Jun 17 15:15:05 2006
State : clean, degraded, recovering
Active Devices : 3
Working Devices : 4
Failed Devices : 0
Spare Devices : 1
Layout : left-symmetric
Chunk Size : 128K
Reshape Status : 6% complete
Delta Devices : 1, (3->4)
UUID : 50e3173e:b5d2bdb6:7db3576b:644409bb
Events : 0.3211829
Number Major Minor RaidDevice State
0 8 1 0 active sync /dev/sda1
1 8 17 1 active sync /dev/sdb1
2 3 65 2 active sync /dev/hdb1
3 0 0 3 removed
4 22 1 - spare /dev/hdc1
[root@homepc ~]# cat /proc/mdstat
Personalities : [raid5] [raid4]
md0 : active raid5 sdb1[1] sda1[0] hdc1[4](S) hdb1[2]
490223104 blocks super 0.91 level 5, 128k chunk, algorithm 2 [4/3]
[UUU_]
[=>...................] reshape = 6.9% (17073280/245111552)
finish=86.3min speed=44003K/sec
unused devices: <none>
[root@homepc ~]#
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